Elevator-hatchway gate



(No Model.)

ELEVATOR HATGHWAY GATE.

iatented June 10, W30.

. p [Ill n a L rl w I- 1/0 a *2 d H 0 5: M m. H w Hm H u. a 0 M I I /h h n M /H, H/. IIIIMU .222 21:: i ,xL 4 I j I a 0 T N avvuamtozs QwMwQ/mw I proved and simple means whereby the gate of Buchanan and State of Missouri, have incured to the elevator car or cage are the four UNITED STATES PATENT OFFICE.

DENNY O. MATHEWS AND ISAAC PRUETT, OF ST. JOSEPH, MISSOURI.

ELEVATOR-HATCHWAY GATE.

SPECIFICATION forming part of Letters Patent No. 429,932, dated June 10, 1890.

Application filed August 22, 1889- To all whom it may concern:

Be it known that we, DENNY O. MATHEWS and ISAAC PRUETT, citizens of the United States, residing at St. Joseph, in the county vented certain new and useful Improvements in Elevator-Hatchway Gates, of which the following is a specification, reference being had therein to the accompanying drawings, in which- Figure 1 represents a front view of our improved gate applied to an ordinary elevatorshaft or well; Fig. 2, an end elevation of the same, and Fig. 3 a plan view.

The object of the invention is essentially to provide an elevator shaft or well with im- (or gates, if two are employed) will be automatically opened as the elevator car or cage approaches each floor, and automatically closed as the elevator car or cage passes on, up or down. the means employed being positive and reliable in operation, thus insuring safety, as will be more fully hereinafter set forth.

In the accompanying drawings, A designates an ordinary elevator car or cage working between the vertical guide-posts B. Se-

operating arms or cams F, two arms being upon each side of the elevator car or cage. The lower arms are secured near the floor of the elevator car or cage and the upper arms or cams a suitable distance above and a short distance to one side of the vertical plane of the lower arms. These arms or cams may be secured upon any convenient portion of the car and project out horizontally therefrom. The horizontal rails O of the folding gates are pivoted to the gate-posts C, and are pivotally connected at their respective inner ends by verticalbars O. The gates, when closed, meet in the middle of the passage-way, and may be provided with any suitable catch or look. The upper and lower rails of each gate are preferably slotted at their pivotal points to permit of a limited movement on their pivots when the gates are thrown or folded up, as shown at the left-hand side of Fig. 1. The

middle rail of each gate is provided with an Serial No. 321,603. (No model.)

outward extension D, which is bent upward and screw-threaded and provided with an adjustable weight D, which serves to hold the gate open and cause it to work smoothly and steadily. The pivots or shafts E, on which the central gate-rails are secured,are extended backwardly and form rock-shafts, the rear ends of these shafts being journaled in suitable standards E, bolted to the floor of the building. Upon the ends of these rock-shafts are secured the star-wheels G, which are in the same vertical plane with the arms F on the elevator car or cage, the lower arms being disposed to the outside of the center of the respective rook-shafts and the upper arms inside thereof, whereby when the car is moved up or down the said arms will alternately impinge against the inclined faces of the star wheels upon opposite sides of the rock-shafts.

The operation will be apparent from the foregoing, and is briefly as follows: The elevator car or cage being in the position shown in Fig. 1, upon descending the lower arms F will impinge against the outer inclined faces of the star-wheels G and cause the shafts E to partially rotate in theirbearin gs and raise and fold the gates back out of the passage-way, as shown in dotted lines on the left-hand side of Fig. 1. As the elevator-car descends, the upper arms F impinge against the inner inclined faces of the star-wheels and rotate the shaft sufficiently to close both of the gates. In ascending the operation is reversed-that is to say, the upper arms first automatically open the gates, and the lower arms then perform the closing operation, thereby always keeping the gates closed while the car is not at the landing.

We have shown two gates; butit is evident that we may dispense with one should the exigencies of the case require or render it advisable.

Having thus fully described our invention, what we claim is- The automatic hatchway-operating devices consisting of the ways, the elevator-car Work ing between these ways, this car being provided with the horizontal arms or cams F, arranged in different vertical planes, the folding gates pivotally supported on gateposts C, one rail of each gate being provided In testimony whereof We affix our signatures with a screw-threaded arm D an adjustable in presence of two witnesses. weight on each of these arms, horizontal rockshafts E,j0u1nale(l in bearings at right an- DENNY O. MATHElVS. 5 gles to the gates and secured to them, and ISAAC PRUETT.

star-wheels G, secured on the said rock-shafts Witnesses:

in the same vertical plane with the arms F T. A. TRENT,

on the car, substantially as described. N. \V. PICKARD. 

